Problem 5. Echo Effects Use the hiA'IIAE function le you created to create an echo signal using your original speech signal and a constant attenuation. You will need to create a signal that is a scaled version of the original and add it to the original with the desired offset in time. Experiment with different values for the time delay and attenuation. Listen to the resulting signals and note your observations. 1. Generate a 13-2 5second echo effect. Let 1:01:55. 2. Use a nonconstant attenuation anction= such as an exponential: it} = sism . Determine values of A and 1: that make an interesting e'ect. 3. Use several dirent delays and amplitudes to get a variety of echoes. 4. Use an oscillatory attenuation function, such as GIL!) = Acost}. Describe the impact that your choice of time delay Toad rattan-maa}: rt have on the resulting synthesized echo- Be specic about changes in parameters and relative impact on sound. 'What happens if T changes during the echogeneration process